Highest temperature in Tokyo on August 15?

Platform comparison

Market context

On 15 August 2026, Tokyo Haneda Airport Station will record its daily maximum temperature in Celsius. The market resolves to whichever temperature band captures the highest reading logged in Weather Underground's Daily Observations table—the granular station data rather than the rounded summary figures. This distinction matters: Haneda's automated sensors often register peaks that differ slightly from published day-high summaries, particularly during afternoon convection or urban heat island effects common in Tokyo's August climate.

Historical August temperatures at Haneda show a median high near 32–33°C, with extremes ranging from 29°C in cooler years to 37°C during heat waves. The 0% crowd probability suggests traders are pricing in either extreme confidence in a narrow band or genuine uncertainty about which specific range will resolve. August in Tokyo typically brings humid subtropical conditions; the Japan Meteorological Agency's seasonal outlooks and any issued heat warnings in early August 2026 will signal whether that year trends toward above-normal or near-normal maxima.

From a regulatory standpoint, this market's accessibility depends on jurisdiction and operator licensing. Under Germany's GlüStV framework, prediction markets on weather events may require a gambling licence if structured as wagering. US CFTC oversight applies if the operator is US-domiciled or serves US customers; weather derivatives fall outside CFTC jurisdiction only if they meet specific exemptions. Many platforms operate under a "no-KYC up to $1,500 per user" model, which typically means traders can participate without identity verification provided individual positions or account balances remain below that threshold—though this varies by operator and regulatory interpretation. Traders should verify their platform's compliance status before committing capital.

Methodology

This overview of Highest temperature in Tokyo on August 15? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.

Resolution & payout

On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.

FAQ

Do I need to KYC for Is Kalshi Legal in California?

Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.

How are winnings taxed?

Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.

Are prediction markets gambling?

Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.

Is there a withdrawal cap?

No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).

What if regulation changes?

If regulation changes in your jurisdiction (e.g. prediction markets are banned), Is Kalshi Legal in California would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.